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Finding the Fourth Proportional to 383,926.40, 575,198.40 and 328,630.40

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Solution

The fourth proportional to 383,926.40, 575,198.40 and 328,630.40 is: 492,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,926.40 : 575,198.40 = 328,630.40 : x
  2. Step 2: Convert to fraction form
    383,926.40/575,198.40 = 328,630.40/x
  3. Step 3: Cross multiply
    383,926.40x = 575,198.40 × 328,630.40
  4. Step 4: Simplify right side
    383,926.40x = 189,027,680,271.36
  5. Step 5: Solve for x
    x = 189,027,680,271.36/383,926.40
  6. Step 6: Final answer
    x = 492,353.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.